Mikaeus, the Unhallowed + Altar of Dementia + Pith Driller

Prerequisites

• Pith Driller does not have a +1/+1 counter on it.

Steps

1. 1Activate Altar of Dementia by sacrifiicing Pith Driller.
2. 2When Pith Driller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. 3When Pith Driller enters the battlefield, it triggers, putting a -1/-1 counter on it.
4. 4Resolve the Altar of Dementia ability, causing target player to mill cards equal to Pith Driller's power.
5. 5Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill